Grading and excavating machine.



Nl/Efl/TOR .5. H. Bloomer.

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I l v l l I l l l I I l l l 1 I l l l PATENTED MAY 8, 1906.

S. H. BLOOMER. GRADING AND EXGAVATING MACHINE.

APPLICATION FILED AUG.9, 1905.

WITNESSES:

No. 819,843. PATENTED MAY 8, 1906. S. H. BLOOMER. GRADING AND EXGAVATING MACHINE.

APPLICATION FILED AUG.9, 1905.

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I/Vl/EIVIOR J. l/. Blaamer:

No. 819,843. PATENTED MAY 8, 1906. s. H. BLOOMER.

GRADING AND EXOAVATING MACHINE.

APPLICATION FILED AUG. 9, 1905.

WITNESSES:

INVENTOR zZH-BL /QW UNITED STATES PATENT OFFICE.

STEPHEN HENRY BLOOMER, OF SEATTLE, WASHINGTON.

GRADING AND EXCAVATING MACHINE.

Specification of Letters Patent.

Batented May 8, 1906.

Application filed August 9,1906- Serial No. 273,396.

To all whom it may concern:

Be it known that I, STEPHEN HENRY BLoouER, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Grading and Excavating Machines, of which the following is a specification.

My invention relates to certain improvements in grading and excavating apparatus and it more particularly has for its object 'to provide an apparatus of this character for removing earth, gravel, &c., from one place to another for leveling surfaces, filling flats, and the like, and which will be of a simple and economical construction and will effectively serve its intended purposes.

In its generic nature my invention consists in certain improvements over my gradingand excavating apparatus disclosed in my Patent No. 776,990, granted December 6, 1904, and it particularly seeks to provide a driving mechanism for the endless cable constructed in such a manner as to permit the excavating implement to move continuously in one direction without the necessity of backing or reversing the same.

In its detailed nature my invention consists in certain novel construction, combination, and arrangement of parts, all of which will be first described in detail and then be specifically pointed out in the claims, reference being had to the accompanying drawings, in which Figure 1 is a plan view showing my excavatingvmachine complete. Fig. 2 is a perspective view of the drive mechanism. Fig. 3 is a vertical longitudinal section thereof. Fig. 4 is a cross-section on the line 4 4 of Fig. 3. Fig. 5 is a top plan view thereof. Fig. 6 is a cross-section on the line 6 6 of Fig. 3.

Referring now to the accompanying drawings, in which like numerals and letters of reference indicate like parts in all of the figures, it will be seen that my invention includes an endless cable C, which passes through the power mechanism A and around the corner-sheaves 6 which are mounted on the base-blocks B, as shown. Suitable excavating implements S are secured to the cable C by guy-ropes in a manner similar to that shown in my patent hereinbefore referred to. The usual guide-sheaves H are provided in the same manner as in my patent above referred to, as is also the dumping mechanism E, as shown, all of which, with the exception of the power mechanism A, may be of the same construction as shown in my patent.

The power or drive mechanism A, which imparts motion to the endless conveyer-cable C,to which the scrapers or plows, respectively, are attached, comprises a sled which consists of the side runners 1 joined by cross-bars 1*, and upon which is securely mounted a framework consisting of the corner-posts 2 2, the top longitudinal brace-bars 2 2 and diagonal cross brace-bars 2 2 and the intermediate longitudinal beams 2 as shown. Diagonal cross-bars 2 2 similar to the bars or beams 2 2, unite the longitudinal beams 2 2, as shown. 2 2 designate brace-rods for bracing the framework, as readily understood by reference to the drawings. Mounted in bearings 3 on the longitudinal beams 2 2 are a pair of spindles 3 3, each of which carry at their lowermost extremity a sheave or pulley 3 and have gears 3 3 secured to the spindles 3 3 between the longitudinal beams 2 2, as shown. 4 designates a third spindle mounted in adjustable bearings 4 on the diagonal beams 2' 2, and the spindle 4 also carries a gear 4 between the longitudinal beams 2 2 which meshes with the gears 3 3, as shown, whereby the spindles 3 3 and 4 will rotate together. spindle 4 is provided with a sheave 4 of like construction to the sheaves 3 3*, each of which sheaves lie in the same horizontal plane and at a sufficient distance above the sled or base to permit passage of the scrapers or excavating-tools through the frame below the sheaves and over the sled, a suitable platform 5 being provided on the sled, which has inclined enteringand exit guideways 5 5*, respectively, for the excavating implements.

6 designates a shaft mounted in bearings 6 6 in the longitudinal beams 2 2 and in a bearing 6 on the sled-base, which shaft 6 carries a bevel-gear 6", which meshes with the drive-pinion 7 c of the drive-shaft 7, which is geared to the motor M through the gear 8 on the shaft 7, which meshes with the gear m on the motor M, a suitable clutch 7 being provided to throw the motor into and out of gear. The motor M may be geared up with the drum D, which carries the guy-cable D, in the manner similar to that shown in my patent before referred to.

The bearings 4 can be adjusted along the The beams 2 2, respectively, to tighten or loosen the cable, .and thereby allow for adjustment of the cable tension.

The manner in which my invention operates is similar to the operation of the invention disclosed in my patent, with the exception that in my present invention the scrapers merely pass over the sled-floor in an S- shape path instead of passing around the spindles in an upwardly-curving spiral path, as in mypatent above referred to.

From the foregoing description, taken in connection with the accompanying drawings, it is thought that the complete construction, operation, and many advantages of my invention will be readily understood by those skilled in the art to which it appertains, and I desire to say that slight changes in the detailed construction, operation, and arrangement of parts may be made without departing from the scope ofthe invention or the appended claims.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. A drive mechanism of the class described, comprising a base, a supportingframe mounted thereon, a plurality of sheaves rotatably mounted on said supporting-frame and held to rotate in a horizontal plane above the base, said sheaves adapted to receive an endless conveyer-cable, gear connections between all of said sheaves, a drive-motor, gear connections between said drive-motor and said sheaves, substantially as shown and described.

2. A drive mechanism for excavating apparatus comprising a supporting-sled, a platform thereon, a horizontal frame supported above said sled, a plurality of spindles mounted in bearings in said horizontal plane, intermeshing gears on said spindles, sheaves secured to the lower end of said spindles and rotating in the same horizontal plane above the sled-platform, and a supplemental shaft 

